NSN 3020-01-157-4392 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-157-4392. Manufacturer of record part number: 2D37X.
Material Document and Classification: MIL-P-15035,TYPE FBI MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Pressure Angle: 20.0000 DEGREES
Material: PLASTIC PHENOLIC AND COTTON OVERALL
2 manufacturer part numbers on file
Manufacturer of record: Dynalec Corporation
Identification
NSN: 3020-01-157-4392
NIIN: 011574392
FSC: 3020 — Gears, Pulleys, Sprockets, and Transmission Chain
FSG: 30 — Mechanical Power Transmission Equipment
Primary part number: 2D37X
Manufacturer: Dynalec Corporation
General Description
The Gear,helical, cataloged under National Stock Number 3020-01-157-4392, is classified within Federal Supply Class 3020 (Gears, Pulleys, Sprockets, and Transmission Chain) of the Mechanical Power Transmission Equipment group. The manufacturer of record is Dynalec Corporation. Government technical data includes 5 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 4 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 10 items share a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
Technical Specifications
Parameter
Value
NSN
3020-01-157-4392
Primary Part Number
2D37X
Item Name
Gear,helical
FSC / FSG
3020 / 30 — Gears, Pulleys, Sprockets, and Transmission Chain
Manufacturer
Dynalec Corporation
Status
ACTIVE
Helix Angle
25.0000 DEGREES
Teeth Quantity
95
Material Document and Classification
MIL-P-15035,TYPE FBI MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Pressure Angle
20.0000 DEGREES
Material
PLASTIC PHENOLIC AND COTTON OVERALL
Lifecycle & Compliance
Acquisition Status
ACTIVE
DEMIL Code
DEMIL A — No Demilitarization Required
Hazard
No hazard code in the DLA record (HMIC N)
Criticality Code
X
⇄Related Items10
Each row states its source: a government interchangeability/replacement code, or a possible match on a shared part number.
3020-01-157-43932D124POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Dynalec Corporation
3020-01-157-43942D126POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Dynalec Corporation
6320-01-157-4400DL-13200-1POSSIBLE MATCH
DUMMY TRANSMITTER,SHIP'S DISTANC
Possible match (shared part number)Dynalec Corporation
3020-01-158-40852D54POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Dynalec Corporation
3020-01-158-40862D98XPOSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Dynalec Corporation
3020-01-158-40872D55POSSIBLE MATCH
GEAR,WORM WHEEL
Possible match (shared part number)Dynalec Corporation
3020-01-158-46122D56POSSIBLE MATCH
GEAR,WORM
Possible match (shared part number)Dynalec Corporation
3040-01-158-87062DY2POSSIBLE MATCH
DIFFERENTIAL GEAR UNIT
Possible match (shared part number)Dynalec Corporation
3020-01-158-93962D24POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Dynalec Corporation
3020-01-158-93972D36POSSIBLE MATCH
GEAR,SPUR
Possible match (shared part number)Dynalec Corporation
NSN 3020-01-157-4392 is a Gear,helical, manufactured by Dynalec Corporation, classified under FSC 3020, Gears, Pulleys, Sprockets, and Transmission Chain. Status: active.
What part numbers are listed for NSN 3020-01-157-4392?
NSN 3020-01-157-4392 has 2 manufacturer part numbers on file: 2D37X (Dynalec Corporation), DL-13200-1 PIECE 37 (Dynalec Corporation).
What NSN replaces 3020-01-157-4392?
10 possible matches (shared part number, not a government interchangeability claim): 3020-01-157-4393, 3020-01-157-4394, 6320-01-157-4400. Verify interchangeability with system specifications before substitution.
What are the specifications of 2D37X?
Key specifications for 2D37X: Helix Angle: 25.0000 DEGREES; Teeth Quantity: 95; Material Document and Classification: MIL-P-15035,TYPE FBI MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Pressure Angle: 20.0000 DEGREES. 5 specifications are documented in the U.S. Government catalog.
Is NSN 3020-01-157-4392 hazardous material?
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
Sources
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
✓ Data cited from the U.S. Government catalog; commercial cross-references from OEM and certified industry sources.